heres my take on the system. its capable of running bf3 at ultra with 50-60fps. the monitor has some built in speakers im pretty sure. if you had some more cash, id go to scan.co.uk and pick up a samsung 830 128gb SSD and use it as a boot drive.
theres no point of z77 and the i5 3570k when you are not overclocking. the i5 3450 and the h77-v are about the same thing minus the overclocking